Arcuate disc for butterfly valve



FIG. 1 is an isometric view of the arcuate disc for butterfly valve of this invention;

FIG. 2 is a top plan view;

FIG. 3 is a bottom view;

FIG. 4 is a right side view;

FIG. 5 is a left side view;

FIG. 6 is a left side view of the disc turned 19°;

FIG. 7 is a right side view of the disc turned 19°; and,

FIG. 8 is a sectional view taken along the line 8-8 of FIG. 2. 

The ornamental design for the arcuate disc for butterfly valve, as shown and described. 